Naturally durable, kiln dried Siberian Larch
Silva Timber always has good stocks of sawn timber available in a number of different sizes and grades. Whether you are a bespoke joinery shop or an industrial user, Silva Timber is geared up to efficiently service your requirement.
Our sawn Siberian Larch is of the highest quality and consistently exceeds the official grading standards. Take a close look at the photographs and videos on our website, or better still come and see it for yourself - we're sure you'll be impressed.
Sawn kiln dried Siberian Larch timber is intended for further processing by industrial users. A common use for this product is the manufacture of exterior cladding. Silva Timber also offer a range of standard cladding profiles from stock and can produce custom profiles upon request. Please contact us for further information.
Square edged with rough sawn finish. Also appropriate for fencing, edging or used as boarding for sheds, barns, agricultural buildings etc depending on finish desired.
Nominal sizes available:
25 x 100mm
25 x 125mm
25 x 150mm
32 x 150mm
50 x 100mm
Silva's FSC® Certified kiln dried Siberian Larch is well manufactured. Boards are of a consistently high quality - exceeding recognised 'GOST 26002-83' grading standards.
The timber used to manufacture this product is cut from sustainable old growth logs harvested in the Irkutsk region of Siberia. Wood fibre from this harsh climate (long cold winters) is much sought after for its natural growth characteristics – exceptionally slow growing therefore dense with tight grain and relatively few well interspersed small sound knots.
About Silva’s Siberian Larch
Silva’s Siberian Larch is produced from a consistent and reliable raw material that is kiln dried at source to a moisture content of 16 – 18% (+/-2%). Among its many benefits the kiln drying process enables the boards to dry uniformly to achieve optimal stability, have a finish applied immediately and to be installed without the need for acclimatisation on site. For more information on the benefits of kiln dried timber click here.
The main characteristic of Silva’s Sawfalling (I-IV) grade Siberian Larch is the inclusion of occasional small, well interspersed sound tight knots. These are also known as live knots or intergrown knots. Live knots are cut from the part of a tree trunk where the branches are still living and are therefore bonded into the surrounding wood fibre. They are tightly encased and do not contain any rot or dead wood.
Siberian Larch heartwood has a colour palette consisting of aesthetically pleasing warm golden brown, light brown and pale red brown tones.
The raw material is manufactured by one of the leading primary producers of Siberian Larch in the Irkutsk region of Siberia. With immediate access to a plentiful supply of old growth logs from this vast forest area, our supplier is able to provide us with Siberian Larch of an exceptional quality that exceeding the official industry recognised 'GOST 26002-83' grading standards.
Siberian Larch – the ‘Tree of Eternity’
Siberian Larch is a sustainable, old-growth timber that has been used in construction for centuries. Today it is used extensively throughout Europe, primarily for external applications such as cladding and decking, and for other uses including flooring, bridges and even Olympic velodrome tracks. Its remarkable qualities and unique performance characteristics have led to it being referred to as the 'Tree of Eternity'.
Natural resins and extractives in Siberian Larch provide a high level of resistance against decay and rot. The primary extractive in Siberian Larch is arabinogalactan which is toxic to fungi. Siberian Larch is rated as Durability Class 3 according to BS EN 350-2 and therefore does not require pressure impregnated chemical preservatives (not to be confused with decorative / protective wood finishes).
Grain and Texture
Siberian Larch has straight grain with a fine uniform texture.
Silva’s Siberian Larch grows in an ‘extreme continental climate’ which is characterised by long cold winters and short hot summers. As a consequence trees grow more slowly and contain a high proportion of latewood. This is the part of the wood in a growth ring of a tree that is produced later in the growing season. The cells of latewood are smaller and have thicker cell walls than those produced earlier in the season. The resulting wood fibre is tight grained, dense (570 - 650 kg/m3 when dry) and hard. In fact Siberian Larch is the hardest of all commercially available softwood species. It has a Janka scale rating of 1100 lb/in2 (European Redwood is 480 lb/in2). This makes it more resistant to impact and abrasion than many other wood species and therefore well suited for use in public areas where wear and tear may be of concern.
Large content of heartwood
Siberian Larch trees are composed of 75-90% heartwood in their natural existence, which is denser, less permeable and more durable than sapwood. Heartwood provides maximum durability, consistent quality and a more uniform colour.